Passion equates to an overabundance of emotion, really. And a lot of people can't handle their own overabundance intelligently. If you care 9000 about one thing, you likely have the disposition to care 9000 about minor, stupid things as well.
I'm talking about a passionate person, not just passion in the bedroom, BTW. And from his reaction I think he was too.
SS kinda reminded me of it, saying he wanted someone to debate with. If that puts things in perspective. If y'all have met laid back and rational, passionate people, that's cool, but the two usually aren't gonna go hand in hand.